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VBScript

XML-DSig Add Object Reference with Transforms Specified Explicitly

Demonstrates how to use the new AddObjectRef2 method to explicitly specify the XML Transforms fragment.

Chilkat VBScript Downloads

VBScript
Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
'Create a Unicode (utf-16) output text file.
Set outFile = fso.CreateTextFile("output.txt", True, True)

success = 0

' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

success = 1

' Build the following XML to be signed:

' <?xml version="1.0" encoding="utf-8"?>
' <InitUpload xmlns="http://e-dokumenty.mf.gov.pl">
'     <DocumentType>JPK</DocumentType>
'     <Version>01.02.01.20160617</Version>
'     <EncryptionKey algorithm="RSA" encoding="Base64" mode="ECB" padding="PKCS#1">xxxx</EncryptionKey>
'     <DocumentList>
'         <Document>
'             <FormCode schemaVersion="1-1" systemCode="JPK_VAT (3)">JPK_VAT</FormCode>
'             <FileName>JPK_VAT_3_v1-1_20181201.xml</FileName>
'             <ContentLength>8736</ContentLength>
'             <HashValue algorithm="SHA-256" encoding="Base64">JEDI1pItwh6dj/Xx1uts/x61qnjZ4DLHpkZMhmf1oKQ=</HashValue>
'             <FileSignatureList filesNumber="1">
'                 <Packaging>
'                     <SplitZip mode="zip" type="split"/>
'                 </Packaging>
'                 <Encryption>
'                     <AES block="16" mode="CBC" padding="PKCS#7" size="256">
'                         <IV bytes="16" encoding="Base64">z64oN9zXHt1+S3XACRSCYw==</IV>
'                     </AES>
'                 </Encryption>
'                 <FileSignature>
'                     <OrdinalNumber>1</OrdinalNumber>
'                     <FileName>JPK_VAT_3_v1-1_20181201-000.xml.zip.aes</FileName>
'                     <ContentLength>16</ContentLength>
'                     <HashValue algorithm="MD5" encoding="Base64">5MX0q1935fvMjLFV7E1yDw==</HashValue>
'                 </FileSignature>
'             </FileSignatureList>
'         </Document>
'     </DocumentList>
' </InitUpload>

' Use this online tool to generate code from sample XML: 
' Generate Code to Create XML

set xmlToSign = CreateObject("Chilkat.Xml")
xmlToSign.Tag = "InitUpload"
success = xmlToSign.AddAttribute("xmlns","http://e-dokumenty.mf.gov.pl")
xmlToSign.UpdateChildContent "DocumentType","JPK"
xmlToSign.UpdateChildContent "Version","01.02.01.20160617"
success = xmlToSign.UpdateAttrAt("EncryptionKey",1,"algorithm","RSA")
success = xmlToSign.UpdateAttrAt("EncryptionKey",1,"encoding","Base64")
success = xmlToSign.UpdateAttrAt("EncryptionKey",1,"mode","ECB")
success = xmlToSign.UpdateAttrAt("EncryptionKey",1,"padding","PKCS#1")
xmlToSign.UpdateChildContent "EncryptionKey","xxxx"
success = xmlToSign.UpdateAttrAt("DocumentList|Document|FormCode",1,"schemaVersion","1-1")
success = xmlToSign.UpdateAttrAt("DocumentList|Document|FormCode",1,"systemCode","JPK_VAT (3)")
xmlToSign.UpdateChildContent "DocumentList|Document|FormCode","JPK_VAT"
xmlToSign.UpdateChildContent "DocumentList|Document|FileName","JPK_VAT_3_v1-1_20181201.xml"
xmlToSign.UpdateChildContent "DocumentList|Document|ContentLength","8736"
success = xmlToSign.UpdateAttrAt("DocumentList|Document|HashValue",1,"algorithm","SHA-256")
success = xmlToSign.UpdateAttrAt("DocumentList|Document|HashValue",1,"encoding","Base64")
xmlToSign.UpdateChildContent "DocumentList|Document|HashValue","JEDI1pItwh6dj/Xx1uts/x61qnjZ4DLHpkZMhmf1oKQ="
success = xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList",1,"filesNumber","1")
success = xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Packaging|SplitZip",1,"mode","zip")
success = xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Packaging|SplitZip",1,"type","split")
success = xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES",1,"block","16")
success = xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES",1,"mode","CBC")
success = xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES",1,"padding","PKCS#7")
success = xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES",1,"size","256")
success = xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES|IV",1,"bytes","16")
success = xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|Encryption|AES|IV",1,"encoding","Base64")
xmlToSign.UpdateChildContent "DocumentList|Document|FileSignatureList|Encryption|AES|IV","z64oN9zXHt1+S3XACRSCYw=="
xmlToSign.UpdateChildContent "DocumentList|Document|FileSignatureList|FileSignature|OrdinalNumber","1"
xmlToSign.UpdateChildContent "DocumentList|Document|FileSignatureList|FileSignature|FileName","JPK_VAT_3_v1-1_20181201-000.xml.zip.aes"
xmlToSign.UpdateChildContent "DocumentList|Document|FileSignatureList|FileSignature|ContentLength","16"
success = xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|FileSignature|HashValue",1,"algorithm","MD5")
success = xmlToSign.UpdateAttrAt("DocumentList|Document|FileSignatureList|FileSignature|HashValue",1,"encoding","Base64")
xmlToSign.UpdateChildContent "DocumentList|Document|FileSignatureList|FileSignature|HashValue","5MX0q1935fvMjLFV7E1yDw=="

set gen = CreateObject("Chilkat.XmlDSigGen")

gen.SigLocation = "InitUpload"
gen.SigLocationMod = 0
gen.SigId = "id-1234"
gen.SigNamespacePrefix = "ds"
gen.SigNamespaceUri = "http://www.w3.org/2000/09/xmldsig#"
gen.SignedInfoCanonAlg = "EXCL_C14N"
gen.SignedInfoDigestMethod = "sha256"

' Create an Object to be added to the Signature.

' <xades:QualifyingProperties Target="#id-1234" xmlns:xades="http://uri.etsi.org/01903/v1.3.2#">
'     <xades:SignedProperties Id="xades-id-1234">
'         <xades:SignedSignatureProperties>
'             <xades:SigningTime>TO BE GENERATED BY CHILKAT</xades:SigningTime>
'             <xades:SigningCertificate>
'                 <xades:Cert>
'                     <xades:CertDigest>
'                         <ds:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/>
'                         <ds:DigestValue>TO BE GENERATED BY CHILKAT</ds:DigestValue>
'                     </xades:CertDigest>
'                     <xades:IssuerSerial>
'                         <ds:X509IssuerName>TO BE GENERATED BY CHILKAT</ds:X509IssuerName>
'                         <ds:X509SerialNumber>TO BE GENERATED BY CHILKAT</ds:X509SerialNumber>
'                     </xades:IssuerSerial>
'                 </xades:Cert>
'             </xades:SigningCertificate>
'         </xades:SignedSignatureProperties>
'         <xades:SignedDataObjectProperties>
'             <xades:DataObjectFormat ObjectReference="#r-id-1">
'                 <xades:MimeType>text/xml</xades:MimeType>
'             </xades:DataObjectFormat>
'         </xades:SignedDataObjectProperties>
'     </xades:SignedProperties>
' </xades:QualifyingProperties>

set object1 = CreateObject("Chilkat.Xml")
object1.Tag = "xades:QualifyingProperties"
success = object1.AddAttribute("xmlns:xades","http://uri.etsi.org/01903/v1.3.2#")
success = object1.AddAttribute("Target","#id-1234")
success = object1.UpdateAttrAt("xades:SignedProperties",1,"Id","xades-id-1234")
' Note: It may be that http://www.w3.org/2001/04/xmlenc#sha256 is needed in the following line instead of http://www.w3.org/2000/09/xmldsig#sha1
object1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningTime","TO BE GENERATED BY CHILKAT"
success = object1.UpdateAttrAt("xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestMethod",1,"Algorithm","http://www.w3.org/2000/09/xmldsig#sha1")
object1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:CertDigest|ds:DigestValue","TO BE GENERATED BY CHILKAT"
object1.UpdateChildContent "xades:SignedProperties|xades:SignedSignatureProperties|xades:SigningCertificateV2|xades:Cert|xades:IssuerSerialV2","TO BE GENERATED BY CHILKAT"
success = object1.UpdateAttrAt("xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat",1,"ObjectReference","#r-id-1")
object1.UpdateChildContent "xades:SignedProperties|xades:SignedDataObjectProperties|xades:DataObjectFormat|xades:MimeType","text/xml"

success = gen.AddObject("",object1.GetXml(),"","")

' -------- Reference 1 --------
' Build the following Transforms fragment:

' <ds:Transforms>
'     <ds:Transform Algorithm="http://www.w3.org/TR/1999/REC-xpath-19991116">
'         <ds:XPath>not(ancestor-or-self::ds:Signature)</ds:XPath>
'     </ds:Transform>
'     <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
' </ds:Transforms>

set xml1 = CreateObject("Chilkat.Xml")
xml1.Tag = "ds:Transforms"
success = xml1.UpdateAttrAt("ds:Transform",1,"Algorithm","http://www.w3.org/TR/1999/REC-xpath-19991116")
xml1.UpdateChildContent "ds:Transform|ds:XPath","not(ancestor-or-self::ds:Signature)"
success = xml1.UpdateAttrAt("ds:Transform[1]",1,"Algorithm","http://www.w3.org/2001/10/xml-exc-c14n#")

success = gen.AddSameDocRef2("","sha256",xml1,"")
success = gen.SetRefIdAttr("","r-id-1")

' -------- Reference 2 --------
' Build the following Transforms fragment:

' <ds:Transforms>
'     <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
' </ds:Transforms>

set xml2 = CreateObject("Chilkat.Xml")
xml2.Tag = "ds:Transforms"
success = xml2.UpdateAttrAt("ds:Transform",1,"Algorithm","http://www.w3.org/2001/10/xml-exc-c14n#")

success = gen.AddObjectRef2("xades-id-1234","sha256",xml2,"http://uri.etsi.org/01903#SignedProperties")

' Provide a certificate + private key. (PFX password is test123)
set cert = CreateObject("Chilkat.Cert")
success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123")
If (success <> 1) Then
    outFile.WriteLine(cert.LastErrorText)
    WScript.Quit
End If

success = gen.SetX509Cert(cert,1)

gen.KeyInfoType = "X509Data"
gen.X509Type = "Certificate"

' Load XML to be signed...
set sbXml = CreateObject("Chilkat.StringBuilder")
success = xmlToSign.GetXmlSb(sbXml)

gen.Behaviors = "IndentedSignature"

' Sign the XML...
success = gen.CreateXmlDSigSb(sbXml)
If (success <> 1) Then
    outFile.WriteLine(gen.LastErrorText)
    WScript.Quit
End If

' -----------------------------------------------

' Save the signed XML to a file.
success = sbXml.WriteFile("qa_output/signedXml.xml","utf-8",0)

outFile.WriteLine(sbXml.GetAsString())

' ----------------------------------------
' Verify the signatures we just produced...
set verifier = CreateObject("Chilkat.XmlDSig")
success = verifier.LoadSignatureSb(sbXml)
If (success <> 1) Then
    outFile.WriteLine(verifier.LastErrorText)
    WScript.Quit
End If

numSigs = verifier.NumSignatures
verifyIdx = 0
Do While verifyIdx < numSigs
    verifier.Selector = verifyIdx
    verified = verifier.VerifySignature(1)
    If (verified <> 1) Then
        outFile.WriteLine(verifier.LastErrorText)
        WScript.Quit
    End If

    verifyIdx = verifyIdx + 1
Loop
outFile.WriteLine("All signatures were successfully verified.")

outFile.Close